Attachment plug cap



Jan. 2, A MASSEY ATTACHMENT PLUG CAP Filed July 21, 1932 INVENTOR. AUGUST/NE H MASSEY BY a H g ATTORNEY Patented Jan. 2, H93 l PLUG CAP no H. Massey, Stratford, Conn, assignor nbia ihonograph @ornpany, Ina, er Conn, a corporation of New York lion July 21, 15232. Serial No. 1323,3813

3 Glaims. (Cl. 173 351) This invention relates to new and useful imspaced relation to the mounting screws 14 and provements in attachment caps and has for being adapted to secure the ends of conductors an object to provide an att ent plug cap (not shown) to the contact members. Such conct finger ductors are, of course, brought into the cap adapted to mount coma r 5 ing different distances between their mounting through the usual opening 16 therein. 60

and binding screws. Qrdinarily, attachment plug caps are provided Gther objects advantages w l become apith openings to receive the binding screws Parent from a d t OW g dehe openings being provided in enlargements tailed description taken in connccticn with the noulded at the inner side of the body and the l) accompanying r win wh r in a s i f y said openings being spaced from the mounting e5 embodiment of the invention i shown. Howscrew opening 8 a distance equal to the distance ever, it will be understood int he invention is between a mounting screw and a binding screw. not limited to the exact detaiis d sclosed but in- However, the contact members made by different cludes all such variations and modifications as manufacturers do not have their mounting 15 fall within the scope of the claims. screws and binding screws spaced the same dis- 7o In the drawing: tance apart. That is, in the product of one man- Figure l is a side elevational view of an attachufacturer the two screws may be spaced apart a. ment plug cap in accordance with the invention distance greater than or less than the distance Fig. 2 is a bottom plan view of the cap; between the screws in the product of another Fig. 3 is a similar view the contact fingers manufacturer. 75'

' being omitted; and With the present device the contact members Fig. 4 is a sectional view taken substantially are disposed with their plate por ions 13 enalong the line 4-1 of rig. 2. gaging the lugs 7, the shoulder portions 9 and Referring in detail to the drawing the reference the extensions 11 and the mourning screws 14 character 5 indicate in its entirety the improved are driven into the openings 8 in the lugs 7. The

' cap moulded from. any suitable insulating matebinding screws 15 will be disposed in the spaces rial. Cap 5 is hollow and includes a portion between the portions 11 and the side walls 6 of or wall 5 at the inner side of which at diametrithe body. Here attention is called to the fact that cally opposite points provided pair or" lugs or the portions 9, extensions 11 and adjacent por- 30 enlargements '7 each with an opening or tions of the wall 6 combine to form open sided 85 recess 8 for the reception of Q mou ting screw. pockets for the reception of the lower portions Also diametrically opp .e no s at its inner of the binding screws 15. side the body is provided with enlargements or It is to be noted that said portions 11 are of shoulder portions 9 adjacent one side of which appreciable length and form open sided pockets as are upstanding lugs r tits 19, purpose of above described and it will therefore be noted 9o which will later e sung from the that the cap 5 is adapted to have contact memouter edges of the enlarge shoulders 9 bers mounted therein irrespective of slight difare flange like portions or walls 11 the height ferences in the distances between the mounting of the portions 9. It will be noted that the flange and binding screws thereof. That is, the screws like portions or extensions 11 each extend in the 14 and 15 may be somewhat closer together than direction of one of the lugs 7 and that such porshown or they may be spaced farther apart. tions are arranged in sp ced relation to the walls here Will be I10 a portion to interfere With 6 of the cap. the insertion of the binding screws and yet the The contact members are the usual conplates 13 of the contact members will be ade- 45 struction and each include a or blade 12 quately supported on the lugs 7 and 9 and the porcarried by a mounting portion 0 pla'e 13 through tions or extensions 11 of the lugs 9.

which is passed a mounting screw entering into As a matter of fact the p a 13 d o a one of the openings or recesses 8 of one of the be of the same length since should they fall short lugs 7. It will be understood that two contact of the lugs 9 they will be supported on the upper 50 members are employed in connection with each edges of the portions or extensions 11. In adcap 5, one cap contact ine' ber being anchored to dition to assisting in supporting the plates 13 each of the lugs 7 whereby the members are spaced the portions or extensions 11 also form a partial the proper distance apart. barrier enclosing the lower portions of the hind- Each of the plates 13 carries a binding screw ing screws 15 whereby said portions will not be 55- 15, the said binding screws being arranged in exposed below the plates 13 of the contact member. The raised portions or tits 10 are to assist in maintaining the exposed portions of a lead wire under the head of a binding screw to which the wire is connected.

From the foregoing description it will be seen that by providing open sided pockets formed by the extension or wall like portion 11, rather than recesses for the reception of the lower portions of the binding screws the improved cap is adapted to receive contact members of slightly different sizes or construction. The variations in sizes or the variations in the distances between the binding and mounting screws of these devices is relatively slight and all known variations are taken care of by the structure disclosed. Therefore, it will be seen that the improvement disclosed makes the present cap substantially universal as regards the mounting of contact members. Further, there is some savings in the material from which these caps are moulded and in addition the tools employed in the moulding operations are somewhat less complicated and cheaper to make.

Having thus described the invention, what is claimed is:

1. In an attachment plug cap, a hollow body of insulating material, said body having a pair of lugs moulded integral therewith at its inner side and provided with openings for the reception of the mounting screws of contact members, and

L-shaped lugs formed with said body and each having an arm extending radially with respect to the Walls of the body and an arm in spaced relation to said walls and providing with said walls open sided pockets for the reception of the binding screws of the contact members.

2. In an attachment plug cap, a hollow body of insulating material, said body having a pair of lugs moulded integral therewith at its inner side and provided with openings for the reception of the mounting screws of contact members, other lugs formed with said body in spaced relation to said first lugs, said other lugs having portions extending toward said first lugs and in spaced relation to the walls of said body, and said extending portions co-operating with the walls of said body to provide open sided pockets for the reception of the binding screws of the contact members.

3. In an attachment plug cap, a body of insulating material including an annular wall, lugs at the inner side of said wall and arranged diametrically opposite each other provided with openings for the reception of mounting screws of contact members, other lugs at the inner side of said wall and arranged diametrically opposite each other and at points about said walls midway between said first lugs, said second lugs including portions extending toward said first lugs and in spaced relation to the walls of said body whereby said extending portions with the walls of the body provide open sided pockets for the reception of the binding screws of the contact members.

AUGUSTINE I-I. MASSEY. 

